One time, when my wife was doing homework with my 6-year-old son, he did not want to do something so she couldn't take it and she slightly yelled at him. I sat down with him and he told me that "He's ...

How should I handle an 8 year old lawyering and quibbling?
E.g., anytime he has a rule, or a task, or is told what to do, his FIRST impulse is nearly 100% to find some fault with the technicality or ...